CVE-2026-40334
Low
Low
Medium
High
Critical
3.5
CVSS Score
Vulnerability Description
libgphoto2 is a camera access and control library. In versions up to and including 2.5.33, a missing null terminator exists in ptp_unpack_Canon_FE() in camlibs/ptp2/ptp-pack.c (line 1377). The function copies a filename into a 13-byte buffer using strncpy without explicitly null-terminating the result. If the source data is exactly 13 bytes with no null terminator, the buffer is left unterminated, leading to out-of-bounds reads in any subsequent string operation. Commit 259fc7d3bfe534ce4b114c464f55b448670ab873 patches the issue.
CVSS Metrics
Common Vulnerability Scoring System
Vector String:
CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
Attack Vector
P
Attack Complexity
L
Privileges Required
N
User Interaction
N
Scope
U
Confidentiality
L
Integrity
N
Availability
L
Severity Details
3.5
out of 10.0
Low
Weakness Type (CWE)
CWE-170
Improper Null Termination
- Description
- The product does not terminate or incorrectly terminates a string or array with a null character or equivalent terminator.
- Exploit Likelihood
- Medium
- Typical Severity
- High
- Abstraction Level
- Base
Key Information
- Published Date
- April 18, 2026
